Reflection artifacts when rendering
That is the reflection of the sun lamp.  The size is related to the size property of the lamp.  If you change it to 0, it will disappear.  You will also have perfectly crisp shadows.

The sun lamp reflection looks unnatural because cycles produces a perfect reflection, instead of the soft edged sun were used to seeing because of the atmosphere.  And there is no bloom that happens in your eyes or in cameras to bright objects.  More info

So instead, You can add the bloom as a post process.

Or, use HDR an illumination map instead of a sun lamp.

Or, on the lamp, uncheck the box for "Multiple Importance".  If the glossy shaders have no roughness, or set to "Sharp", the glint with disappear... 

More info on multiple importance: 1 2